The MCU version of what's happening to the DCEU

For this to work we must figure the MCU cast and character equivalent to the DCEU. Robert Downey Jr/Iron Man = Ben Affleck/Batman, Chris Evans/Captain America = Henry Cavill/Superman, Chris Hemsworth/Thor = G*l G*dot/Wonder Woman. Ignoring Ruffalo, Renner and Johansson temporarily because I wouldn't compare any of them to Jason Momoa, Ray Fisher and Ezra Miller just yet, lets say that James Rhodes was added to the Avengers roster so that Don Cheadle/War Machine = Ray Fisher/Cyborg.

so lets say that the MCU was in the Phase 1 and its first Avengers movie is about to be released. Due to a myriad of reasons however, the first Avengers movie doesn't do too well critically and at the box office and its plans for sequels and future character spinoffs are suddenly up in the air. Following the Avengers movie, sequels for Iron Man and Thor come after but Iron Man's future at Marvel Studios is suddenly in peril. If Robert Downey Jr. had immediate personal issues and experienced the same heavy studio inference, delays and meddling producers for Iron Man 3 just like Ben Affleck did with The Batman, then according to the outcome, Iron Man 3 would've been scrapped and Robert Downey would publicly step down from the role and movie. Iron Man would have then be relaunched into a solo universe separate from the MCU and subsequently recast with a different, younger actor altogether.

Next is Chris Hemsworth and Thor 2: The Dark World. If the equivalent to this actor and movie is G*l G*dot and Wonder Woman 1984, then not much changes happen here. According to critics however, the movie's tone is adjusted to be more lighter than the first and because of the plot, Thor is now a r*pist all of a sudden, just like in Wonder Woman 1984, but there's not much public controversy about it. It gets mixed reviews accordingly, though fan reception is not great.

Next is Chris Evans and Captain America: The Winter Soldier. If the equivalent to this actor and movie is Henry Cavill and the next Superman movie. But just like Henry Cavill and his character, Captain America never gets an official sequel announced due to the first Avengers movie doing so poorly, so say goodbye to any remaining plot threads, further character development and official appearances for Steve Rogers. There's eventually a scheduled cameo appearance for Chris in Ant Man (2015), just like Henry for Shazam (2019) but for some reason, scheduling conflicts or lack of proper payment, Chris can't film it and the headless body of Captain America appears instead.

So while all of this is happening, there was supposed to be solo films for War Machine and Black Widow too. What happened to them? Well, if the actor and character equivalent to Don Cheadle/War Machine is Ray Fisher and Scarlett Johansson/Black Widow is Ezra Miller/The Flash, then we can map both of those accordingly as well. If Don Cheadle had experienced the same racism and abuse on set of the first Avengers (2012) by the hands of Kevin Fiege the way Ray Fisher went through on Justice League (2017) by Geoff Johns , then the War Machine solo movie is quietly scrapped while Don Cheadle battles being blackballed, blacklisted and slandered in the media by Marvel Studios for years for speaking out what happened. War Machine was also listed to star in Black Widow but Don was fired from that movie too with no plans in development to feature him ever again.

Just like the Flash film, Black Widow was in development hell for years. Directors came and went with no actual start date to film. Eventually a director is hired and by the grace of god, Robert Downey Jr. is also slated to star in the film as Iron Man, just like Ben Affleck will with his Batman. However, spoilers and spoilers are leaked into the world and the plot of Black Widow is revealed: Robert Downey Jr's Iron Man is killed off in and replaced by an older version of Iron Man who hasn't been seen in 30 years and the plot of Black Widow has the solo purpose of soft-rebooting the MCU to fix in the older Iron Man's universe and Chris Evans' Captain America will also be retconned out of existence.